1681070011 has 4 divisors (see below), whose sum is σ = 1769547400. Its totient is φ = 1592592624.

The previous prime is 1681069997. The next prime is 1681070021. The reversal of 1681070011 is 1100701861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1681070011 - 2⁵ = 1681069979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681070021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44238666 + ... + 44238703.

It is an arithmetic number, because the mean of its divisors is an integer number (442386850).

Almost surely, 2^1681070011 is an apocalyptic number.

1681070011 is a deficient number, since it is larger than the sum of its proper divisors (88477389).

1681070011 is an equidigital number, since it uses as much as digits as its factorization.

1681070011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88477388.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 1681070011 is about 41000.8537837933. The cubic root of 1681070011 is about 1189.0367203973.

Adding to 1681070011 its reverse (1100701861), we get a palindrome (2781771872).

The spelling of 1681070011 in words is "one billion, six hundred eighty-one million, seventy thousand, eleven".